Schoolteacher William Potts is the double of a captured German spy, so he is sent to Germany by British Intelligence to obtain the plans of a new secret weapon, causing chaos in a Hitler Youth school in the process.
Will Hay
William Potts / Muller
Frank Pettingell
Professor Hoffman
Julien Mitchell
General Von Glotz
Charles Hawtrey
Max
Barry Morse
Kurt
Peter Ustinov
Krauss
Peter Croft
Hans
Anne Firth
Lena
Leslie Harcourt
Vogel
Jeremy Hawk
A.D.C.
Raymond Lovell
Schmidt
Aubrey Mallalieu
Rector
